A new documentary tries to explain generative AI fast, clearly and without taking sides, even as the technology keeps changing. On Friday, “The AI Doc: Or How I Became an Apocaloptimist” reaches theaters after nearly three years of work. Directors Daniel Roher and Charlie Tyrell say they set out to answer basic questions about what artificial intelligence is, why it is good and why it is bad. They found it almost impossible to fit into one film. The team interviews more than 40 people, including major AI leaders and critics.